V-type high-power medium-speed diesel engine

Abstract

The invention discloses a V-type high-power medium-speed diesel engine. The V-type high-power medium-speed diesel engine comprises a cylinder assembly, an oil injection assembly, an air starting assembly, a gas intake and exhaust assembly, a lubricating assembly and a cooling assembly. A cylinder block is a V-type cylinder block. The included angle between two rows of cylinders of the V-type cylinder block is 50 degrees, the bore diameter of cylinder holes of the cylinder block is 390mm, the stroke of the cylinder is 550mm, the center distance between the cylinder holes is 840mm, and the ratedpower of a single cylinder is 850kW. Thanks to the V-type cylinder block structure, the diesel engine body structure is more compact. Owing to the arrangement of the split cylinder head and a segmented gas inlet pipe, maintenance is facilitated, and parts are convenient to replace. A split or segmented pressure storage rail makes oil supply pressure more stable. By adopting a distributor and twosets of starting systems, a plurality of starting modes of the diesel engine can be chosen and better controlled. The inlet gas temperature is ensured by a two-stage air cooler. Safety is ensured thanks to the heat insulation arrangement of an exhaust manifold. The lubricating assembly and the cooling assembly are additionally provided with electronically driven oil pumps or water pumps to enhancethe controllability of lubrication and cooling.

Description

technical field [0001] The invention relates to the field of engines, in particular to a V-shaped high-power medium-speed diesel engine. Background technique [0002] High-power medium-speed diesel engines are generally used in large land power stations, marine generator sets, nuclear power emergency units, offshore platforms, 10,000 to 50,000 tons offshore and inland ships, large engineering ships, luxury cruise ships, large LNG ships, etc. It is basically a four-stroke engine. Since the high-power medium-speed diesel engine requires higher single-machine power, its strong load requirement is higher than that of ordinary diesel engines. For foreign advanced medium-speed diesel engines, its average effective pressure is as high as 3MPa, and the highest explosion pressure Up to 20MPa. Due to the characteristics of high power and high torque, high-power and medium-speed diesel engines have relatively high requirements for several important key systems, such as cylinder block ...

AI Technical Summary

Problems solved by technology

However, the existing high-power medium-speed diesel engine is difficult to meet the problem of relatively low power under the same volume, and because the body of the diesel engine is large, the traditional assembly model of integrated components is not convenient for maintenance and replacement, etc.

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